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b43: HT-PHY: implement spurious tone avoidance

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On N-PHY it's also done after TX power fix, so it was easy to spot.
Unfortunately the MMIO logs I have from ndsiwrapper include channels
1-12 only, so enabling code for 13 and 14 is just a N-PHY-based guess.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2013-03-07 16:47:18 +01:00 committed by John W. Linville
parent f6099f89e6
commit 2dacfe7c10
1 changed files with 20 additions and 0 deletions
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20
drivers/net/wireless/b43/phy_ht.c
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@ -285,6 +285,24 @@ static void b43_phy_ht_tx_power_fix(struct b43_wldev *dev)
* Channel switching ops.
**************************************************/
static void b43_phy_ht_spur_avoid(struct b43_wldev *dev,
struct ieee80211_channel *new_channel)
{
struct bcma_device *core = dev->dev->bdev;
int spuravoid = 0;
/* Check for 13 and 14 is just a guess, we don't have enough logs. */
if (new_channel->hw_value == 13 || new_channel->hw_value == 14)
spuravoid = 1;
bcma_core_pll_ctl(core, B43_BCMA_CLKCTLST_PHY_PLL_REQ, 0, false);
bcma_pmu_spuravoid_pllupdate(&core->bus->drv_cc, spuravoid);
bcma_core_pll_ctl(core,
B43_BCMA_CLKCTLST_80211_PLL_REQ |
B43_BCMA_CLKCTLST_PHY_PLL_REQ,
B43_BCMA_CLKCTLST_80211_PLL_ST |
B43_BCMA_CLKCTLST_PHY_PLL_ST, false);
}
static void b43_phy_ht_channel_setup(struct b43_wldev *dev,
const struct b43_phy_ht_channeltab_e_phy *e,
struct ieee80211_channel *new_channel)
@ -318,6 +336,8 @@ static void b43_phy_ht_channel_setup(struct b43_wldev *dev,
if (1) /* TODO: On N it's for early devices only, what about HT? */
b43_phy_ht_tx_power_fix(dev);
b43_phy_ht_spur_avoid(dev, new_channel);
b43_phy_write(dev, 0x017e, 0x3830);
}